Adjustable seat



N. HANSEN.

ADJUSTABLE SEAT.

Jan. 16, 1923.

FILED FEB. 27,1922.

avwe'm toz Patented Jan. 16, 1923.

NIELS HANSEN, OF EAST STANWOOD, WASHINGTON.

ADJUSTABLE SEAT.

Original application filed August 9, 1920, Serial No. 402,134. Dividedand this application filed February 27, 1922. Serial No. 539,468.

To all whom it may concern:

Be it known that I, NIELS HANSEN, citizen of the United States, residingat East Stanwood in the county of Snohomish and State of l vashington,have invented certain new and useful Improvements in Adjustable Seats;and I do declare the followin to be a full, clear, and exact description0 the invention, such 'as will enable others skilled in the art to whichit appertains to make and use the same.

This application relates to improvements in adjustable seats and moreparticularly to those adapted primarily for use upon wood sawingmachines, the present invention forming a division of my pending U. S.application, Serial No. 402134, filed August 9, 1920.

It is the object of the invention to provide a simple and inexpensive,yet a highly eliicient and desirable seat for the operator of a machine,preferably of a treadle oper ated machine, the construction being suchthat the seat may be readily adjusted toward and from the foot treadleor adjusted vertically, according to the requirements and size of theoperator.

With the foregoing in view, the invention resides in the novel subjectmatter hereinafter described and. claimed, the description beingsupplemented by the accompanying drawings with the foot treadle of awood-sawing machine.

Figure 2 is a horizontal sectional view as' indicated by line 2 2 ofFigure 1.

Figure 3 "is a rear elevation of the adjustable seat and associatedparts.

In the drawings above briefly described, I have shown my invention inconnection with a portion of the frame 1 of a woodsawing machine, uponwhich frame a foot treadle 2 is mounted for operating the machine.Behind this foot treadle, the frame is provided with a platform 3 havinga pair of parallel tracks 4 between which a suitable chair-base 5 isslidably received, said base being supported by the platform 3. Thisplatform is provided with a series of rackteeth 6 which mesh with a spurgear 7 on a shaft 8, a removable rod 9 beiii adapted for engagement withsaid gear and With a pair of bearings 10 carried by the base 5, so thatthis base may be held against sliding along the tracks 4 after it isonceadjusted to the desired position. By removing the rod 9, the base may beslid either forwardly 0r rearwardly as required but when this rod isagain engaged with the bearings 10 and the gear 7, movement of said baseis prevented.

Above the base 5 and pivoted at its front end thereto, is a chair seat)1 1 having a rigid back 1-2, the pivotal connection between the frontend of the seat 11 and the base being preferably efi'ected by means of atransverse rod 13 passing through a depending bearing '14 on said seatand through upstanding bearings 15 with which the sides of the base 5are provided. The rear end of the seat 11 rests on an eccentric 16having trunnions 17 ro'tatablysupported by the sides of the base 5 anditwill be seen that by rotating said eccentric, the inclination of theback 12 and the seat 11 may be varied andalso the rear end of said seatmay be raised or lowered as occasion may require. For adjusting theeccentric in this manner, one of the 'trunnions 17 is by preferenceprovided with a hand-wheel 18 having a circumferential series ofopenings 19 through any one of which a. pin 20 may be passed forengagement with the base 5, so as to hold the eccentric in adjustedposition.

By employing the construction shownand described, the seat may be movedforwardly or rearwardly or adjusted in height or inclina'tion, tomeet-the requirements of the operator. I

' Since excellent results have been obtained from the details disclosed,they are preferably followed, but within the scope of the invention asclaimed, numerous minor changes may be made.

I claim:

1. A device of the class described comprising a base having parallelside members positioned vertically, a seat above said base pivotallyconnected at its front end therewith, the pivotal connection of saidseat with said base including an elongated bearing extendinsubstantially throughout the width of an secured in contact with saidseat throughout its length, an eccentric supporting the rear end of theseat, said eccentric being of a length substantially equal the Wi d-l ofthe seat and having its ends in llll] abuttin relation with the innersides of said sid% members, trunnions extending outwardly from the endsof said eccentric and rotatably resting upon said side members, andmeans associated with one of said trunnions for turnin the same andholding it in adjusted position.

2. A (device of the class described comprising a base composed ofparallel side boards standing on edge in vertical planes and cross barsconnecting said side boards,- upstanding bearings on the front ends ofsaid side boards, the upper edges of said side boards having bearingnotches near their rear ends, an elongated eccentric extending betweensaid side boards and having trunnions at its ends restini'in saidbearing notches, a seat board .w ose rear end restssubstantially'throughout 1ts Width on said eccentric, an elongatedbearing se- 20 tween "said upstanding bearings, a rod pass- 25 ingthrough these bearings, and means associated with one of said trunnionsfor holding the eccentric in adjusted position.

In testimony whereof I have hereunto set p my hand.

NIELS HANSEN. T

